Anthony Ruiz (21-11), who replaced an injured Bobby Southworth (only to have opponent Renato “Babalu” Sobral also pull out of the fight due to an injury), will instead meet Trevor Prangley (17-5) at Saturday’s “Strikeforce at the Mansion II” event.

Strikeforce today officially confirmed the fight.

The bout will be a rematch from the fighters’ original meeting at an October 2006 Strikeforce event, where Prangley scored a first-round submission victory over Ruiz.

Saturday’s event takes place at the world famous Playboy Mansion in Beverly Hills, Calif. A free stream of the event will be available through Sherdog.com.

Ruiz, who returns to Strikeforce for the first time since a five-round decision loss to title-holder Southworth in June, will go his eighth win in his past nine fights. In fact, in his past 11 fights, he’s lost only to Southworth and Prangley.

Ruiz, 30, most recently scored a unanimous-decision victory over Jeremy Freitag at a July EliteXC event.

Prangley, meanwhile, was a victim of Affliction’s recent cancellation of its Oct. 11 card. Prangley had been scheduled to fight Matt Lindland, but the event was recently postponed until January. The 36-year-old South African, who will go for his eighth win in nine fights, will compete for the first time since Strikeforce’s four-man middleweight tournament in November 2007. Prangley scored an impressive knockout of Falaniko Vitale in his opening-round bout before suffering a tough-fought loss to Jorge Santiago in the night’s finale.

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